CN109173760A - A kind of environment-friendly type liquefied ammonia dilution system and its production method - Google Patents
A kind of environment-friendly type liquefied ammonia dilution system and its production method Download PDFInfo
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- CN109173760A CN109173760A CN201811181407.3A CN201811181407A CN109173760A CN 109173760 A CN109173760 A CN 109173760A CN 201811181407 A CN201811181407 A CN 201811181407A CN 109173760 A CN109173760 A CN 109173760A
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- liquefied ammonia
- ammonium hydroxide
- water
- ammonia
- environment
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
- B01F23/405—Methods of mixing liquids with liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
- B01F23/40—Mixing liquids with liquids; Emulsifying
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
- B01D2257/406—Ammonia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F2035/98—Cooling
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention patent relates to liquefied ammonia production technical fields, and in particular to a kind of environment-friendly type liquefied ammonia dilution system and its production method.The liquefied ammonia dilution system is including further including cooling tower, circulating water pool, water treatment facilities, tail gas absorber, ammonium hydroxide basin and liquid ammonia storage tank, liquefied ammonia diluter includes the ontology in tower structure, the reaction warehouse for diluting liquefied ammonia is equipped in the middle part of ontology, it is equipped with outside reaction warehouse for cooling plate heat exchanger, ontology middle part is equipped with circulating water outlet pipe, circulating water intake pipe and liquefied ammonia inlet tube；Liquid ammonia storage tank enters liquefied ammonia diluter by ammonium hydroxide outlet, and the soft water of circulating water pool is pumped into liquefied ammonia diluter through soft water inlet tube by softened water pump, and liquefied ammonia and soft water are diluted to certain density ammonium hydroxide in reaction warehouse, and ammonium hydroxide is sent by ammonium hydroxide outlet to ammonium hydroxide basin.The present invention also provides a kind of production methods of environment-friendly type liquefied ammonia dilution system.The present invention solves the problems, such as ammonia leakage in liquefied ammonia dilution, reduces the pollution to environment.
Description
Technical field
The invention patent relates to liquefied ammonia production technical fields, and in particular to a kind of environment-friendly type liquefied ammonia dilution system and its production
Method.
Background technique
Liquefied ammonia is important the raw material of industry, is widely used in pharmacy, oil refining, synthetic fibers, synthetic resin, freezing, metallurgy
Etc..In industrial production be usually by liquefied ammonia be dissolved in water be made into industrial ammonia come using.Traditional ammonium hydroxide preparation facilities
Structure type is: be placed in the bottom of ammonium hydroxide configuration groove body using the Stainless Steel Coil for offering fluid hole, liquefied ammonia by ammonia pump and
Valve control slowly enters in the groove body for filling water, and liquefied ammonia is slowly dissolved in water and is formed Dilute Ammonia Solution.Existing ammonium hydroxide
Preparation facilities haves the defects that the following aspects: liquefied ammonia can generate a large amount of ammonia in dilution, if do not taken suitable
When measure controlled, will be so that a large amount of ammonia escapes into atmosphere.For the escape for reducing ammonia in liquefied ammonia dilution, various dresses
It sets and facility is all being developed, due in existing design and structure, sealing effect is not satisfactory, and liquefied ammonia diluted at this stage
Part ammonia leakage is always generated in journey, is polluted the environment.
Summary of the invention
In view of the deficiencies of the prior art, the present invention provides a kind of environment-friendly type liquefied ammonia dilution system and its production methods, solve
In liquefied ammonia dilution the problem of ammonia leakage, reduce the pollution to environment.
The technical solution of liquefied ammonia dilution system is achieved in that including liquefied ammonia diluter in the present invention, which is characterized in that
It further include cooling tower, circulating water pool, water treatment facilities, tail gas absorber, ammonium hydroxide basin and liquid ammonia storage tank, the liquefied ammonia diluter
Ontology including being in tower structure, the ontology middle part are equipped with the reaction warehouse for diluting liquefied ammonia, are equipped with outside the reaction warehouse
For cooling plate heat exchanger, its bottom of the ontology be equipped with soft water inlet tube, top be equipped with ammonium hydroxide outlet, described
Circulating water outlet pipe, circulating water intake pipe and liquefied ammonia inlet tube are equipped in the middle part of body；The liquid ammonia storage tank by ammonium hydroxide outlet into
Enter liquefied ammonia diluter, the soft water of circulating water pool is pumped into liquefied ammonia diluter through soft water inlet tube by softened water pump, and liquefied ammonia and soft water are anti-
It answers and is diluted to certain density ammonium hydroxide in storehouse, ammonium hydroxide is sent by ammonium hydroxide outlet to ammonium hydroxide basin；The ammonium hydroxide basin passes through
The exhaust pipe of upper part is connected to tail gas absorber, and the plate heat exchanger send recirculated water to cold by circulating water outlet pipe
But the cooling water of tower cooler, circulating water pool enters plate heat exchanger through circulating water intake tube pump by water circulating pump；The circulating water pool
It is connected with the cooling tower and raw water is softened into the water treatment facilities for soft water.
Distributor is additionally provided on the liquefied ammonia inlet tube, the distributor is equipped with multiple spray heads.
Preferably, the liquefied ammonia inlet tube is equipped with liquefied ammonia flowmeter and controls the liquefied ammonia flow control valve of liquefied ammonia flow；
The soft water inlet pipes are equipped with the soft water flux regulating valve for adjusting soft water flux.
Preferably, liquid level sensor is equipped in the reaction warehouse, the environment-friendly type liquefied ammonia dilution system further includes PLC control
System, the PLC control system respectively with liquid level sensor, liquefied ammonia flow control valve, soft water flux regulating valve, softened water pump and follow
The electrical connection of ring water pump.
The production method of the environment-friendly type liquefied ammonia dilution system comprising following steps:
A the inlet valve and exhaust valve for) opening liquid ammonia storage tank, open softened water pump and water circulating pump, make circulating water cooling system
Work；
B 22~26m of soft water confluent of softened water pump) is adjusted3/ h, when the liquid level in the reaction warehouse of liquefied ammonia diluter reaches
When 550~650mm, the liquefied ammonia flow control valve on liquefied ammonia inlet tube is opened, first makes flow control valve opening in its total aperture
It is slowly increased in 10% range, the mass percent concentration for controlling ammonium hydroxide in liquefied ammonia diluter is 1~10%；When liquefied ammonia flow is steady
After being set to 4~6t/h, continue the aperture for being slowly increased liquefied ammonia flow control valve, controls the quality percentage of ammonium hydroxide in liquefied ammonia diluter
Specific concentration is 12~20%；
C the constant level in reaction warehouse) is set when reaching 1450~1550mm, by PLC control system by level sensing
Device and liquefied ammonia flow control valve link, and control liquefied ammonia flow control valve aperture according to liquid level, stablize liquefied ammonia dilution system
Output ammonium hydroxide；
D) the fixed gas ammonia in liquefied ammonia enters in tail gas absorber from the exhaust pipe of ammonium hydroxide tank top, is inhaled by tail gas
Receive the water absorption processing in device；
E) when ammonium hydroxide basin liquid level and ammonium hydroxide basin tank deck distance are the 1/5~1/6 of ammonium hydroxide basin height, as ammonium hydroxide
Basin matches ammonia terminal；When liquid ammonia storage tank pressure gauge show pressure be lower than 0.3MPa when, as liquid ammonia storage tank match ammonia terminal,
It is then shut off softened water pump and water circulating pump.
Preferably, the hardness of the soft water is lower than 0.03mmol/L.
The invention solves the defect existing in the background technology, has the advantages that
The present invention provides the environment-friendly type liquefied ammonia dilution systems and its production method of a kind of reliable performance, and it is dilute to solve liquefied ammonia
During releasing the problem of ammonia leakage, reduce the pollution to environment.The present invention will obtain ammonium hydroxide and be gone out by ammonium hydroxide in liquid ammonia storage tank
Mouthful pipe enters liquefied ammonia diluter 1, and the soft water of circulating water pool is pumped into liquefied ammonia diluter through soft water inlet tube by softened water pump, liquefied ammonia and soft
Water is diluted to certain density ammonium hydroxide in reaction warehouse, while passing through the cooling water circulating cooling of plate heat exchanger, reduces reaction
The reaction temperature in storehouse reduces detonation phenomenon and occurs, and improves the diluted efficiency of liquefied ammonia.By the way that distribution is arranged in reaction warehouse
Device and spray head are sprayed by the dispersibility of distributor and by liquefied ammonia, increase diluted contact area so that liquefied ammonia with
Dilution water is sufficiently mixed, and improves the stabilization of liquefied ammonia diluted speed and concentration.Furthermore not absorbed in dilution
Fixed gas ammonia is entered in tail gas absorber by the exhaust pipe of ammonium hydroxide tank top, is inhaled completely by the water in tail gas absorber
Receipts processing, to achieve the purpose that ammonia does not leak, reduction pollutes the environment ammonia exhaust emissions, has preferable energy conservation
Environmental-protecting performance.
Detailed description of the invention
Fig. 1 is the principle of the present invention schematic diagram；
Fig. 2 is the structural schematic diagram of liquefied ammonia diluter in Fig. 1
In figure: 1- liquefied ammonia diluter, 2- cooling tower, 3- circulating water pool, 4- water treatment facilities, 5- tail gas absorber, 6- ammonia
Water basin, 7- liquid ammonia storage tank, 8- softened water pump, 9- water circulating pump, 11- ontology, 12- plate heat exchanger, 13- circulating water outlet pipe,
14- circulating water intake pipe, 15- soft water inlet tube, 16- ammonium hydroxide outlet, 17- liquefied ammonia inlet tube, 18- reaction warehouse, 19- distribution
Device, 20- spray head.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Environment-friendly type liquefied ammonia dilution system as depicted in figs. 1 and 2, including liquefied ammonia diluter 1, cooling tower 2, circulating water pool 3,
Water treatment facilities 4, tail gas absorber 5, ammonium hydroxide basin 6 and liquid ammonia storage tank 7, liquefied ammonia diluter 1 include the ontology in tower structure
11, it is equipped with the reaction warehouse 18 for diluting liquefied ammonia in the middle part of ontology 11, is equipped with outside reaction warehouse 18 for cooling plate heat exchanger
12, its bottom of ontology 11 is equipped with soft water inlet tube 15, and top is equipped with ammonium hydroxide outlet 16, goes out in the middle part of ontology 11 equipped with recirculated water
Mouth pipe 13, circulating water intake pipe 14 and liquefied ammonia inlet tube 17；Liquid ammonia storage tank 7 enters liquefied ammonia diluter 1 by ammonium hydroxide outlet 16,
The soft water of circulating water pool 3 is pumped into liquefied ammonia diluter 1, liquefied ammonia and soft water in reaction warehouse 18 through soft water inlet tube 15 by softened water pump 8
It is diluted to certain density ammonium hydroxide, ammonium hydroxide is sent by ammonium hydroxide outlet 16 to ammonium hydroxide basin 6；Ammonium hydroxide basin 6 passes through upper part
Exhaust pipe be connected to tail gas absorber 5, plate heat exchanger 12 send recirculated water to cooling tower 2 by circulating water outlet pipe 13
Cooling, the cooling water of circulating water pool 3 is pumped into plate heat exchanger 12 through circulating water intake pipe 14 by water circulating pump 9；Circulating water pool 3 connects
It is connected to the cooling tower 2 and raw water is softened into the water treatment facilities 4 for soft water.Distributor is additionally provided on liquefied ammonia inlet tube 17
19, distributor 19 is equipped with multiple spray heads 20.Liquefied ammonia inlet tube 17 is equipped with liquefied ammonia flowmeter and controls the liquid of liquefied ammonia flow
Ammonia flow control valve；The soft water flux regulating valve for adjusting soft water flux is equipped at soft water inlet tube 15.It is set in reaction warehouse 18
Have a liquid level sensor, environment-friendly type liquefied ammonia dilution system further includes PLC control system, PLC control system respectively with liquid level sensor,
Liquefied ammonia flow control valve, soft water flux regulating valve, softened water pump 8 and water circulating pump 9 are electrically connected.
The invention also discloses a kind of production methods of environment-friendly type liquefied ammonia dilution system comprising following steps:
A the inlet valve and exhaust valve for) opening liquid ammonia storage tank 7, open softened water pump 8 and water circulating pump 9, make circulating water system
System work；
B 22~26m of soft water confluent of softened water pump 8) is adjusted3/ h, when the liquid level in the reaction warehouse 18 of liquefied ammonia diluter 1 reaches
When to 550~650mm, the liquefied ammonia flow control valve on liquefied ammonia inlet tube 17 is opened, opens flow control valve opening always at it
It is slowly increased in 10% range of degree, the mass percent concentration for controlling ammonium hydroxide in liquefied ammonia diluter 1 is 1~10%；Work as liquefied ammonia
After stability of flow is 4~6t/h, continue the aperture for being slowly increased liquefied ammonia flow control valve, controls ammonium hydroxide in liquefied ammonia diluter 1
Mass percent concentration is 12~20%；The hardness of soft water is lower than 0.03mmol/L.
C when) constant level in setting reaction warehouse 18 reaches 1450~1550mm, liquid level is passed by PLC control system
Sensor and liquefied ammonia flow control valve link, and control liquefied ammonia flow control valve aperture according to liquid level, keep liquefied ammonia dilution system steady
Fixed output ammonium hydroxide.
D) the fixed gas ammonia in liquefied ammonia enters in tail gas absorber 5 from the exhaust pipe at 6 top of ammonium hydroxide basin, by tail gas
Water absorption processing in absorber 5.
E) when 6 liquid level of ammonium hydroxide basin and 6 tank deck of ammonium hydroxide basin distance are the 1/5~1/6 of 6 height of ammonium hydroxide basin, as
Ammonium hydroxide basin 6 matches ammonia terminal；When the pressure gauge of liquid ammonia storage tank 7 shows that pressure is lower than 0.3MPa, as liquid ammonia storage tank 7 is matched
Ammonia terminal is then shut off softened water pump 8 and water circulating pump 9.
Implementation process of the present invention is: system of the invention can quickly produce ammonium hydroxide, and the present invention will obtain ammonium hydroxide in liquid ammonia storage tank 7
Enter liquefied ammonia diluter 1 by ammonium hydroxide outlet 16, the soft water of circulating water pool 3 is pumped into liquid through soft water inlet tube 15 by softened water pump 8
Ammonia diluter 1, liquefied ammonia and soft water are diluted to certain density ammonium hydroxide in reaction warehouse 18, while passing through the cold of plate heat exchanger 12
But water circulating cooling reduces the reaction temperature of reaction warehouse 18, reduces detonation phenomenon and occurs, and improves the diluted effect of liquefied ammonia
Rate.By the way that distributor 19 and spray head 20 are arranged in reaction warehouse 18, sprayed by the dispersibility of distributor 19 and by liquefied ammonia
Leaching, increases diluted contact area, so that liquefied ammonia and dilution water are sufficiently mixed, improves the diluted speed of liquefied ammonia and concentration
Stablize.Furthermore absorbed fixed gas ammonia is not had to enter tail by the exhaust pipe at 6 top of ammonium hydroxide basin in dilution
In aspiration device 5, processing is fully absorbed by the water in tail gas absorber 5, to achieve the purpose that ammonia does not leak, is reduced to ammonia
Exhaust emissions pollutes the environment, and has preferable energy-conserving and environment-protective performance.By PLC control system by liquid level sensor and liquid
The linkage of ammonia flow control valve controls liquefied ammonia flow control valve aperture according to liquid level, makes stable efficient of liquefied ammonia dilution system
Operation, reduces labor intensity of operating staff, further increases productivity.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Within mind and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of environment-friendly type liquefied ammonia dilution system, including liquefied ammonia diluter (1), which is characterized in that further include cooling tower (2), follow
Ring pond (3), water treatment facilities (4), tail gas absorber (5), ammonium hydroxide basin (6) and liquid ammonia storage tank (7), the liquefied ammonia diluter
(1) include the ontology (11) for being in tower structure, the reaction warehouse (18) for diluting liquefied ammonia is equipped in the middle part of the ontology (11), it is described
It is equipped with outside reaction warehouse (18) for cooling plate heat exchanger (12), described its bottom of ontology (11) is equipped with soft water inlet tube
(15), top is equipped with ammonium hydroxide outlet (16), and circulating water outlet pipe (13), circulating water intake are equipped in the middle part of the ontology (11)
Manage (14) and liquefied ammonia inlet tube (17)；The liquid ammonia storage tank (7) enters liquefied ammonia diluter (1) by ammonium hydroxide outlet (16), follows
The soft water in ring pond (3) is pumped into liquefied ammonia diluter (1) by softened water pump (8) through soft water inlet tube (15), and liquefied ammonia and soft water are reacting
Certain density ammonium hydroxide is diluted in storehouse (18), ammonium hydroxide is sent by ammonium hydroxide outlet (16) to ammonium hydroxide basin (6)；The ammonium hydroxide
Basin (6) is connected to by the exhaust pipe of upper part with tail gas absorber (5), and the plate heat exchanger (12) passes through recirculated water
Circulating water outlet pipe (13) send it is cooling to cooling tower (2), the cooling water of circulating water pool (3) by water circulating pump (9) through recirculated water into
Mouth pipe (14) is pumped into plate heat exchanger (12)；The circulating water pool (3) is connected with the cooling tower (2) and by raw water softening
The water treatment facilities (4) of soft water.
2. environment-friendly type liquefied ammonia dilution system according to claim 1, it is characterised in that: on the liquefied ammonia inlet tube (17) also
Equipped with distributor (19), the distributor (19) is equipped with multiple spray heads (20).
3. environment-friendly type liquefied ammonia dilution system according to claim 1 or 2, it is characterised in that: the liquefied ammonia inlet tube (17)
It is equipped with liquefied ammonia flowmeter and controls the liquefied ammonia flow control valve of liquefied ammonia flow；It is equipped at the soft water inlet tube (15) for adjusting
Save the soft water flux regulating valve of soft water flux.
4. environment-friendly type liquefied ammonia dilution system according to claim 3, it is characterised in that: be equipped with liquid in the reaction warehouse (18)
Level sensor, the environment-friendly type liquefied ammonia dilution system further includes PLC control system, and the PLC control system is passed with liquid level respectively
Sensor, liquefied ammonia flow control valve, soft water flux regulating valve, softened water pump (8) and water circulating pump (9) electrical connection.
5. a kind of production method based on environment-friendly type liquefied ammonia dilution system according to claims 1 to 4 comprising following step
It is rapid:
A the inlet valve and exhaust valve for) opening liquid ammonia storage tank (7), open softened water pump (8) and water circulating pump (9), make circulating water
System work；
B 22~the 26m of soft water confluent of softened water pump (8)) is adjusted3/ h, the liquid level in the reaction warehouse (18) of liquefied ammonia diluter (1)
When reaching 550~650mm, the liquefied ammonia flow control valve on liquefied ammonia inlet tube (17) is opened, first makes flow control valve opening at it
It is slowly increased in 10% range of total aperture, the mass percent concentration of control liquefied ammonia diluter (1) interior ammonium hydroxide is 1~10%；
After liquefied ammonia flow stabilizes to 4~6t/h, continue the aperture for being slowly increased liquefied ammonia flow control valve, controls liquefied ammonia diluter (1)
The mass percent concentration of interior ammonium hydroxide is 12~20%；
C the constant level in reaction warehouse (18)) is set when reaching 1450~1550mm, by PLC control system by level sensing
Device and liquefied ammonia flow control valve link, and control liquefied ammonia flow control valve aperture according to liquid level, stablize liquefied ammonia dilution system
Output ammonium hydroxide；
D) the fixed gas ammonia in liquefied ammonia enters in tail gas absorber (5) from the exhaust pipe at the top of ammonium hydroxide basin (6), by tail gas
Water absorption processing in absorber (5)；
E) when ammonium hydroxide basin (6) liquid level and ammonium hydroxide basin (6) tank deck distance are the 1/5~1/6 of ammonium hydroxide basin (6) height, i.e.,
Match ammonia terminal for ammonium hydroxide basin (6)；When the pressure gauge of liquid ammonia storage tank (7) shows that pressure is lower than 0.3MPa, as liquefied ammonia is stored up
Tank (7) matches ammonia terminal, is then shut off softened water pump (8) and water circulating pump (9).
6. the production method of environment-friendly type liquefied ammonia dilution system according to claim 5, the hardness of the soft water are lower than
0.03mmol/L。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811181407.3A CN109173760A (en) | 2018-10-11 | 2018-10-11 | A kind of environment-friendly type liquefied ammonia dilution system and its production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811181407.3A CN109173760A (en) | 2018-10-11 | 2018-10-11 | A kind of environment-friendly type liquefied ammonia dilution system and its production method |
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| Publication Number | Publication Date |
|---|---|
| CN109173760A true CN109173760A (en) | 2019-01-11 |
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ID=64948093
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811181407.3A Withdrawn CN109173760A (en) | 2018-10-11 | 2018-10-11 | A kind of environment-friendly type liquefied ammonia dilution system and its production method |
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| CN (1) | CN109173760A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966942A (en) * | 2019-04-24 | 2019-07-05 | 湖南华中矿业有限公司 | One kind being suitable for the hydrometallurgical liquefied ammonia dilution system of non-ferrous metal and dilution process |
| CN116443891A (en) * | 2023-02-16 | 2023-07-18 | 宜兴市华瑞焚烧炉科技发展有限公司 | System for preparing ammonia water from liquid ammonia |
-
2018
- 2018-10-11 CN CN201811181407.3A patent/CN109173760A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109966942A (en) * | 2019-04-24 | 2019-07-05 | 湖南华中矿业有限公司 | One kind being suitable for the hydrometallurgical liquefied ammonia dilution system of non-ferrous metal and dilution process |
| CN116443891A (en) * | 2023-02-16 | 2023-07-18 | 宜兴市华瑞焚烧炉科技发展有限公司 | System for preparing ammonia water from liquid ammonia |
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190111 |
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| WW01 | Invention patent application withdrawn after publication |